Rifle / SMG Parts
Elevate Your H&K Rifle with Premium Parts – MP5, HK416, SP5, and More!
Enhance your H&K rifle with top-notch parts and accessories. From MP5 and MP5K to SP5 and UMP/USC, we offer a vast selection. Discover high-quality magazines, binary triggers, stocks, grips, barrels, handguards, sights, and more for your firearm. Whether you own an HK416, SP5K, G36, or MP5 22, we have the H&K rifle parts you've been looking for. Shop now to upgrade your rifle to perfection.
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Out Of Stock
MM Registered Sear Pack - Re-Timed Hammer - Belt-Fed
Michaels Machines
$139.95MM Registered Sear Pack - Re-Timed Hammer - Belt-Fed Billeted re-timed Hammer that has been professionally re-timed by Michael's Machines for belt-fed HK firearms with registered sear packs. A one piece billeted HK re-timed hammer is the necessary...HKP-16996$139.95 -
MP5K Navy Style SEF Semi Trigger Group - Clipped & Pinned
H&K Heckler & Koch
$599.95MP5K Navy Style SEF Semi Trigger Group - C/P HK German manufactured parts. Each unit comes with the professionally converted SEF navy style SEF clipped & pinned housing and semi auto only German HK trigger pack. All trigger groups include a new 3rd...HKP-18055$599.95 -
On Sale
Picatinny Rail - HK G36 - HKP
HKP HK Parts
Now: $99.95Was: $179.95Picatinny Rail - HK G36 - HKP HK Lateral Picatinny rail Ambidextrous for carrying handle. Compatible With: G36 G36K G36C Specifications: Material: aluminumhkp-18726Now: $99.95Was: $179.95 -
RCM HK MP5K & MP5KN 9mm Barrel – Threaded 1/2x32 – 3–Lug
RCM
$299.95RCM HK MP5K & MP5KN 9mm Barrel – Threaded 1/2x32 – 3–Lug Machined from a cold hammer forged blank, this MP5KN (PDW) barrel meets the latest specifications with factory-correct, updated 16 flutes in the chamber. Featuring a three-lug...HKP-20806$299.95 -
RCM HK MP5K 10mm Barrel - Threaded 14x.75
RCM
$279.95RCM HK MP5K 10mm Barrel - Threaded 14x.75 Upgrade your MP5K with the RCM HK MP5K 10mm Barrel, featuring a precise 14x1.75 threading for optimal accessory compatibility. Expertly crafted to enhance performance and reliability, this barrel is perfect for...HKP-21155$279.95 -
RCM HK MP5K 10mm Barrel - Threaded 9/16x24
RCM
$279.95RCM HK MP5K 10mm Barrel - Threaded 9/16x24 Enhance the performance of your MP5K with the RCM HK MP5K 10mm Barrel. This barrel is precision engineered for superior accuracy and durability, making it an essential upgrade for firearm enthusiasts...HKP-21157$279.95 -
RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH
RCM
$164.95RCM HK53K (5.56/.223) Barrel - Threaded 15x1 RH These are the finest US-made barrels available and come highly recommended by HKParts. Specifications: Made In The USA Threaded 15x1 RH Counts As 1 US Made 922r Compliant Part Cold Hammer Forged...HKP-02400$164.95 -
RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28
RCM
$204.95RCM MP5 & HK34 9mm Barrel - Threaded 1/2x28 Each barrel is hand-selected from the finest cold hammer forged (CHF) 41V45 steel blanks, expertly profiled and chambered in the desirable 16 flute chamber profile. Finished with a durable...HKP-17762$204.95 -
Strike Industries HK 416 .22LR Crux KeyMod 9" Handguard - Black
Strike Industries
$249.95CRUX KeyMod Handguard for HK416, MR556, 416 .22 - 9 Inch The Crux Handguard is a ultra light weight Key Mod rail for the MR556 and HK416. Weighing in at a fraction of the original rail. The CRUX handguard features Key Mod sessions at the 3, 6, and 9...HKP-17347$249.95 -
Tommy Built HK G36 AR/Stanag Magwell - FDE
Tommy Built
$279.95AR/Stanag Magwell - G36 - FDE Stanag/AR Magwell for the G36/SL8 Platform. This replacement magwell allows the use of standard AR15 Style Magazines. This is a direct magwell swap and should not require any modification or special tools. These are black...HKP-19385$279.95 -
On Sale
TPM - Fluted Bolt Knob - Black
Tactical Precision MFG
Now: $24.95Was: $48.99TPM - Fluted Bolt Knob - Black These bolt knobs can dress up any rifle with a 5/16×24 threaded bolt handle. Features: Dimensions:1.5" x 7/8" x 7/8" Weight: 2 oz Threading: 5/16x24HKP-20786Now: $24.95Was: $48.99 -
On Sale
TPM - Fluted Bolt Knob - Titanium
Tactical Precision MFG
Now: $34.95Was: $48.99TPM - Fluted Bolt Knob - Titanium These bolt knobs can dress up any rifle with a 5/16×24 threaded bolt handle. Features: Dimensions: 1.5" x 7/8" x 7/8" Weight: 2 oz. Material: titanium Threads: 5/16x24HKP-20769Now: $34.95Was: $48.99 -
On Sale
TPM - Remington 700 - 20 MOA - Scope Base Long Action
Tactical Precision MFG
Now: $57.75Was: $76.99TPM Remington 700 Scope Base Long Action 20 MOA These tight tolerance, bomb proof scope rail allow the shooter to make best use of the scope's elevation adjustment for those long-range shots and engagements with 20 MOA options and will match factory...HKP-20763Now: $57.75Was: $76.99 -
On Sale
TPM - Remington 700 - 30 MOA - Scope Base Short Action
Tactical Precision MFG
Now: $57.75Was: $76.99TPM Remington 700 Scope Base Long Action 30 MOA These tight tolerance, bomb proof scope rail allow the shooter to make best use of the scope's elevation adjustment for those long-range shots and engagements with 30 MOA options and will match factory...HKP-20765Now: $57.75Was: $76.99 -
On Sale
TPM AR15 .22 Titanium Full Port Muzzle Brake
Tactical Precision MFG
Now: $64.95Was: $89.99TPM AR15 .22 Titanium Full Port Muzzle Brake This titanium muzzle brake is designed by a master gunsmith and is one of the best and lightest on the market. The spiral port outlets along with the parabolic internal taper significantly reduces recoil while...HKP-20767Now: $64.95Was: $89.99 -
Out Of Stock
Trigger Group (0,1,2) Pictogram - HK MP5 9mm - USED
H&K Heckler & Koch
$0.00HK MP5 9mm (0,1,2) Only Pictogram Black Polymer Trigger Group - Used. Rare configuration and hard to find. This trigger group is from a Demilled PD Trade In. Shown as 0,1,3 but the correct 0,1,2 trigger group.HKP-18791$0.00 -
Out Of Stock
Trigger Group (0,1,3) Pictogram - HK MP5 9mm
H&K Heckler & Koch
$0.00HK MP5 9mm (0,1,3) Only Pictogram Black Polymer Trigger Group. Rare configuration and hard to find.HKP-02018$0.00 -
On Sale
Zeiss/Eltro Fero Z-51 Night Vision Scope-Parts Grade
Zeiss/Eltro
Now: $437.95Was: $499.95Zeiss/Eltro Fero Z-51 Night Vision Scope-Parts Grade Used in non-working condition -SOLD AS IS. Comes shipped in the original German Army transportation case. Good for spare parts, props, etc. These are the last remaining units available. Some parts may...HKP-15655Now: $437.95Was: $499.95 -
30 Round Magazine - LEO Marked - Windowless - HK UMP .40
$99.95Rare Surplus 30 Round Magazine - LEO Marked - Windowless - UMP .40 S/W Rare UMP .40 windowless magazine with LEO markings. Highly unique magazines as these were "early production" magazines that were used before they switched over to the windowed UMP...HKP-20749$99.95 -
Out Of StockOn Sale
AIM HK 91/G3 (7.62x51/.308) Extended Carbine Length Handguard - M-LOK - BLEMISHED
AIM
Now: $51.95Was: $74.95AIM HK 91/G3 (7.62x51/.308) Extended Carbine Length Handguard - M-LOK - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. The most innovative and modular...HKP-18172-BNow: $51.95Was: $74.95 -
Out Of Stock
Ambidextrous Sling Pin For Forearm - Small
HKP HK Parts
$24.95Ambidextrous Eyebolt Sling Pin - Small The ambi pin allows the user to replace the handgaurd push pin to attach a sling hook or attachment point to the sling pin loop area. This pin provides a sling attachment point with for either the left or right side...HKP-02684$24.95 -
On Sale
AR, M4 Stock Adapter - HK SP5 - BLEMISHED
HKP HK Parts
Now: $72.95Was: $99.95AR, M4 Stock Adapter - HK SP5 - BLEMISHED COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. This is the finest AR stock adapter available period. No other adapter...HKP-20748-BNow: $72.95Was: $99.95 -
B&T Angled Foregrip - Picatinny Mount - Universal
B&T Brugger & Thomet
$71.99B&T Angled Foregrip - Coyote Tan - Picatinny Mount For those shooters who prefer an angled foregrip, this grip is the perfect solution. The lugs at the end of the grip assure a firm rest for the supporting hand. The grip can be mounted easily onto...HKP-21392$71.99 -
B&T BT APC.223/5.56/.300 3 Position Telescopic Stock - Black
B&T Brugger & Thomet
$589.95B&T BT APC.223/5.56/.300 3 Position Telescopic Stock Swiss made B&T telescopic for the APC223, ACP556 and APC300. This is a military grade stock as supplied by B&T to military and law enforcement units world-wide. Compatible...HKP-18312$589.95 -
B&T HK 417/G36K Flash Hider
B&T Brugger & Thomet
$144.99B&T HK 417/G36K Flash Hider with Interface for Rotex III/V/VA Specifications: Made in Switzerland Threaded M15x1 NATO spec Does not include face shims Compatible With: HK G36K HK 417 APC223 APC556HKP-21520$144.99 -
B&T HK G3/91 (7.62x51/.308) Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH
B&T Brugger & Thomet
$144.99B&T HK G3/91 (7.62x51/.308) Flash Hider for M.A.R.S Suppressor - Threaded 15x1 RH Compatible With: HK G3/91/PTR HK417/MR762 HK PSG1 7.62x51/.308 firearms threaded 15x1 RH Compatible With the Following Suppressors: M.A.R.S QD...HKP-21518$144.99 -
B&T HK G36/MP7 Picatinny Side Rail
B&T Brugger & Thomet
$69.95B&T HK G36/MP7 Picatinny Side Rail Comes with all mounting hardware. Each rail is sold individually. Compatible With: HK G36 HK MP7 Specs: 127mm lengthHKP-21419$69.95 -
On Sale
Ergo Harris Bipod Mount - KeyMod Handguard
Ergo
Now: $19.95Was: $38.95Ergo Harris Bipod Mount - KeyMod Handguard Features: KeyMod Bipod Mount Black anodized 6061-T6 Alum. Compatible With: Harris-style bipodsHKP-17874Now: $19.95Was: $38.95 -
Out Of Stock
F5 MFG 50 Round AR-15 Skeletonized Drum Magazine
F5 MFG
$189.9550 Round Drum - AR15, M4 - Skeletonized The F5 AR15 Skeletonized Drum is one if not the most compact and versatile 50 round magazines ever produced for the AR-15 in 5.56, .223 & 300 AAC Blackout. Designed and built primarily from aluminum and steel,...HKP-16554$189.95 -
FMP HK G3 Manual
$149.95FMP HK G3 Manual English-translated manuals for the Factory FMP G3 are available now. This is a rare collector's piece and the perfect item for those aiming to assemble a complete FMP G3 parts kit with an authentic factory manual. The cover is inscribed...HKP-21542$149.95 -
Out Of Stock
Franklin Armory / HKP FA HK MP5 Trigger Group – 2 Round Engraved Binary Housing - RAL 8K
FA Franklin Armory / HKP
$1,499.95COMING SOON! Franklin Armory BFSIII HK-C1 – Trigger Group - RAL 8K 3 Position 2 round burst style Engraved Pictograph – HK Binary Trigger Group Our latest and greatest Binary trigger group freshly delivered with a factory HK German housing...HKP-21160$1,499.95 -
G3 Incomplete Backplate
H&K Heckler & Koch
$29.95G3 Incomplete Backplate Factory German G3 refinished backplate. This backplate was fully reconditioned and Parkerized for a factory look. A great replacement or spare to have around to replace your broken or worn out backplates. Don't forget to get a new...HKP-20859$29.95 -
On Sale
G36 Handguard HK German Original Style - Gray - Incomplete - Used
Now: $24.95Was: $49.95G36 Handguard HK German Original Style - Gray - Incomplete - UsedHKP-19773Now: $24.95Was: $49.95 -
Out Of Stock
German HK53 A2 Navy Parts Kit Complete - Used
H&K Heckler & Koch
$0.00HK German HK53 A2 Factory Parts Kit Complete Less Demilled Receiver. Each Parts Kit Includes:HK German Desirable 1/7 Twist Factory Cold Hammer Forged BarrelHK Ambidextrous SEF or Navy Trigger Group (Your Choice Of Lower)Factory HK 53 Wide Forearm (not...HKP-01125$0.00 -
Out Of Stock
GSG9 G36K Gas Piston Rod/Spring Assembly
GSG9
$59.95HK G36K Gas Piston Rod/Spring Assembly - USA New spring assembly that is a must have for spare parts or to use on that HK Sl8-G36 conversion. This is the proper length gas piston to be used for a 12.5" G36K style length gas block and barrel assembly...HKP-18249$59.95 -
Out Of StockOn Sale
H&K (5.56/.223) & (7.62x51/.308) Contact Piece For Paddle Mag Release - USED - BLEMISHED
H&K Heckler & Koch
Now: $18.95Was: $29.95H&K (5.56/.223) & (7.62x51/.308) Contact Piece For Paddle Mag Release - USED - BLEMISHED USED. COSMETICALLY BLEMISHED PARTS ARE FULLY FUNCTIONAL AND SOLD AS IS. THIS PART IS NOT ELIGIBLE FOR RETURN. ALL BLEMISHED PART SALES ARE FINAL. German HK...HKP-00465-BNow: $18.95Was: $29.95 -
Out Of Stock
H&K (5.56/.223) Factory Correct Flash Hider - Threaded 15x1 RH
H&K Heckler & Koch
$0.00H&K (5.56/.223) Factory Correct Flash Hider - Threaded 15x1 RH Fits all HK barrels. 15x1 The right-hand thread is the thread pitch. Perfect for the SL8 & G36 type conversions. Specifications: Threaded 15x1 RH Compatible With: HK 416/MR556 HK...HKP-00952$0.00 -
Out Of Stock
H&K (9mm & 5.56/.223) Unmarked Ambidextrous Housing - Push Pin
H&K Heckler & Koch
$0.00H&K (9mm & 5.56/.223) Unmarked Ambidextrous Housing - Push Pin This trigger housing is designed for use with MP5, 93, and 33 ambidextrous trigger packs, making it an ideal choice for those seeking versatility. Manufactured in Germany, this...HKP-02461$0.00 -
Out Of Stock
H&K +4 Roller 8.04mm - Used
H&K Heckler & Koch
$0.00HK German Roller +4 - Used - 8.04mm 8.04 mm locking roller, The proper roller size is essential for proper bolt gap. HK German Manufacture. Please Note: The price listed is per roller. Order 2 (pair) for a complete set for the bolt head. An easy way to...HKP-19373$0.00 -
Out Of Stock
H&K 11E (7.62x51/.308) Bolt Carrier
H&K Heckler & Koch
$899.95HK 11E bolt carrier HK21E to HK11E bolt carrier used to convert an HK21E to an HK11E to accept HK91/G3 style magazines. This is the HK11E bolt carrier only. Includes: HK 11E Bolt Carrier Last units no longer made- these were the LAST units HK Germany...HKP-16492$899.95